@article{oai:doshisha.repo.nii.ac.jp:00029082,
 author = {若林, 祐克 and Wakabayashi, Yoshikatsu and 衣斐, 信介 and Ibi, Shinsuke and 高橋, 拓海 and Takahashi, Takumi and 岩井, 誠人 and Iwai, Hisato},
 issue = {2},
 journal = {同志社大学ハリス理化学研究報告, The Harris science review of Doshisha University},
 month = {Jul},
 note = {高周波数帯の利用には，分散アンテナ子局 (DU: Distributed Unit) をセル基地局 (CU: Central Unit) の配下に複数設けたC-RAN(Cloud-Radio Access Network)構成が有効である．端末からCUへの上り回線において，端末-DU間では無線信号のマルチユーザ検出，DU-CU間では光ファイバの有線通信が行われる中継通信路の形態となる．有線通信にPDM(Polarization Division Multiplexing)通信を用いることにより，光ファイバ中にMIMO(Multi-Input Multi-Output)通信路を構築することができ，大容量化が可能となる．この構成ではDUとCUの両方でMIMO信号検出を行う必要があり，送受信間で信号処理遅延を引き起こしてしまう．本検討では，即応性を高めることを目的に，DUでは信号検出を行うことなく単純に転送のみを行い，CUにて信号検出を行うものとする．このとき，無線空間と光空間を統合し，一つのMIMO通信路とみなした一括ブラインド信号検出が有効である．本検討では，このブラインド信号検出を実現するDLDC(Differential Linear Dispersion Code)の適用方法を提案する．, One of the solutions for utilizing the high-frequency band is to deploy multiple distributed units (DUs) under a central unit (CU) in cloud radio access network (C-RAN) architecture. In the case of the uplink from the terminal to the CU, wireless links are established between the mobile terminals and DU. On the other hand, optical fibers are connected between the DU and CU. When PDM (Polarization Division Multiplexing) communication is used for optical communications, it is possible to construct multi-input multi-output (MIMO) channels in the fiber. In this configuration, both DU and CU need to detect MIMO signals, which causes severe signal processing delay. In this paper, to improve the responsiveness, it is assumed that the DU does not detect the signal but simply transfers, and only the CU detects the signal. At this time, it is effective to perform blind signal detection after unifying the wireless space and the optical space as one MIMO channel. This paper presents a novel method for demodulating in a CU using differential linear dispersion code (DLDC) to realize blind signal detection., application/pdf},
 pages = {113--122},
 title = {光・無線統合通信路における拡張DLDCを用いたブラインド信号検出に関する検討},
 volume = {63},
 year = {2022},
 yomi = {ワカバヤシ, ヨシカツ and イビ, シンスケ and タカハシ, タクミ and イワイ, ヒサト}
}